I had my first flat tire this weekend. Figures it would be a holiday weekend where no tire shops were open. I was thinking my C-Max would be in my garage all weekend when I remembered my safety seal tire plug kit. I keep it in my Jeep for 4-wheeling ... just in case you lose two tires, these plugs give you a change to make it back to town.
I pulled the wheel and found a small knife blade plunged in between the treads. I thought it might be too large of a hole for a patch or a plug but the safety seal plug worked great. I tested it with soapy water after I was done and no leaks. It's only been a couple of days but it sounds like if it doesn't leak right away, it's won't leak. Only time will tell.
Anyway, I've added this to my list of things to carry.